WEBVTT HIS ANKLEMONITOR AND WAS BACK OUT ON THESTREETS.>> DO NOT ALLOW THESE FOLKSTO COME INTO YOUR COMMUNITIES,THEY WREAK HAVOC AND YOU CAN DOSOMETHING ABOUT IT.>> THAT IS WHAT COMMUNITYMEMBERS DID SUNDAY.>> AFTER THERE HAD BEENCARJACKINGS IN THE CROSS-COUNTRYCOMMUNITY, COMMUNITY PATROLGROUPS AND OTHER MEMBERS HADNOTIFIED ME.LACEE: HE JOINED POLICE TO SHAREHIS STORY.>> CARJACKINGS WREAK HAVOC ON ACOMMUNITY.LACEE: POLICE SENT INCREASEDPATROLS INTO THE AREA.SOMEONE PULLED A GUN ON TWOPEOPLE GETTING INTO THE CAR ANDTOOK OFF WITH IT.>> WE DO NOT WANT THIS TISCALIAND IN AN ARMED -- AN ARMEDCARJACKING IS A VIOLENT CRIME.WE ARE EASILY 10 SECONDS AWAYFROM IT BECOMING A SHOOTING.LACEY: ANOTHER ALSO ON BANCROFT,A GIRL PUT A CROWBAR IN A DOORTO KEEP AN INDIVIDUAL FROMCLOSING IT AND TOOK THE VEHICLE.THANKS TO THE COMMUNITY SAFETYCREWS -- GROUP, AND ARREST WASMADE AFTER A 30 P.M. COMMUNITY ACTION IS KEY BUTSINCE THEY ASKED THE ARRESTEDSUSPECT IS A JUVENILE THIS MAYNOT BE THE LAST ANYONE HEAR FROMHIM.>> HE COULD BE OUT OF JAIL LATERTONIGHT.WE COULD BE TALKING ABOUT HIMAGAIN TOMORROW.LACEE: THE GORU

Police have called the boy a "repeat violent offender," saying that he committed crimes in January, February and March that include multiple armed robberies. He had a juvenile warrant out for his arrest, but police said he cut off his ankle monitor and hit the streets on Sunday.

Police said community members in northwest Baltimore helped in the investigation.

"After there had to been two carjackings in the Cross Country community, community patrol groups and other community members had notified me," Baltimore City Councilman Isaac Yitzy Schleifer said. "Crimes like carjackings, especially armed carjackings, wreak havoc on a community in a very short period of time."

Schleifer called police on Sunday, and police increased patrols in the area.

The first carjacking was reported at 1:45 a.m. in the 6300 block of Park Heights Avenue, where someone pulled a gun on two people getting into their car and took off with the car.

"We don't want this to escalate, and an armed carjacking is a violent crime, and we're just easily seconds away from it becoming a shooting," Smith said.

A second carjacking was reported at 10:30 a.m. in the 3100 block of Bancroft Road. A third carjacking was reported at 3:20 p.m., also on Bancroft, where a group put a crowbar in a door to keep an individual from closing it, then took the vehicle.

With the help of the community safety group Shomrim of Baltimore, Schleifer and police, officers arrested a suspect after the fourth carjacking, which was reported around 8:30 p.m. on Szold Drive.

Police said community action is key, but since the arrested suspect is a juvenile, this may not be the last anyone hears from him.

"He could be out of jail later tonight doing this again. We could be talking about him again tomorrow," Smith said.

Police said they are looking for other people whom they call a gang, and said the group could be responsible for up to four more recent carjackings.